Tony is sitting in a window seat on the right side of the plane. When he is photographed from the right, there is no visible right side of the fuselage, only a wide gap between him and the camera.
When Tony and Hiko are at the geisha house, the bath water is emitting steam when they first enter the bath room. When they are actually taking a bath in the next shot, the water is no longer steaming, meaning that the water temperature is not really as hot as a bath should be.
How did a small boy from a crashing plane end up in an inflatable life raft by himself? Seems like a dramatic turn of events worth including in the story, even if just in a line of dialogue.